Abstract
In the computational mechanics of sediment transport, which approaches to movable-bed phenomena from the viewpoint of a computational dynamics, the numerical movable bed, or the numerical model of granular material, plays an significant role. A numerical movable bed is the tool which is based on the distinct element method analyzing the interparticle collision directly. Although the conventional numerical movable bed has been applied to a comparatively small domain, the application of numerical movable bed to the practical problems of movable-bed phenomena requires the handling of complicated boundary condition and resultant extreme increases of number of the calculation particles. Therefore the parallel computation by the three dimensional numerical movable bed is developed in this study, to enable the calculation with the 1, 000, 000 numbers of the particles. The performance of numerical movable bed is clarified, in a scale of practical problems, through the velocity of sediment in the fill and overflow processes of sediment control dam.
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